Killer in the school

You tell Matt your plan and you both charge at him. You are about to reach him and suddenly he grabs a desk up and throws it. It smashes into Matt and he falls to the ground. You leap at the killer and try to kick him but he knocks you away. You then grab a plank of wood and whack the killer over the head with it. He falls to the ground knocked out. You run over to Matt. He is bleeding heavily. "Just go" he murmers "forget about me". "I'm not leaving you" you reply. "Just do one thing for me" he continues "kill that fucking son of a bitch" With that he is dead. You stand over the body of the killer. Will you: